drm/amdkfd: Drop workaround for GC v9.4.3 revID 0

Remove workaround code for the early engineering
samples GC v9.4.3 SOCs with revID 0

Reviewed-by: Amber Lin <Amber.Lin@amd.com>
Signed-off-by: Apurv Mishra <Apurv.Mishra@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

@@ -2692,6 +2692,13 @@ static int amdgpu_device_ip_early_init(struct amdgpu_device *adev)
 		break;
 	}
 
+	/* Check for IP version 9.4.3 with A0 hardware */
+	if (amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 4, 3) &&
+	    !amdgpu_device_get_rev_id(adev)) {
+		dev_err(adev->dev, "Unsupported A0 hardware\n");
+		return -ENODEV;	/* device unsupported - no device error */
+	}
+
 	if (amdgpu_has_atpx() &&
 	    (amdgpu_is_atpx_hybrid() ||
 	     amdgpu_has_atpx_dgpu_power_cntl()) &&
@@ -2704,7 +2711,6 @@ static int amdgpu_device_ip_early_init(struct amdgpu_device *adev)
 		adev->has_pr3 = parent ? pci_pr3_present(parent) : false;
 	}
 
-
 	adev->pm.pp_feature = amdgpu_pp_feature_mask;
 	if (amdgpu_sriov_vf(adev) || sched_policy == KFD_SCHED_POLICY_NO_HWS)
 		adev->pm.pp_feature &= ~PP_GFXOFF_MASK;

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

@@ -1213,10 +1213,7 @@ static void gmc_v9_0_get_coherence_flags(struct amdgpu_device *adev,
 		if (uncached) {
 			mtype = MTYPE_UC;
 		} else if (ext_coherent) {
-			if (gc_ip_version == IP_VERSION(9, 5, 0) || adev->rev_id)
-				mtype = is_local ? MTYPE_CC : MTYPE_UC;
-			else
-				mtype = MTYPE_UC;
+			mtype = is_local ? MTYPE_CC : MTYPE_UC;
 		} else if (adev->flags & AMD_IS_APU) {
 			mtype = is_local ? mtype_local : MTYPE_NC;
 		} else {
@@ -1336,7 +1333,7 @@ static void gmc_v9_0_override_vm_pte_flags(struct amdgpu_device *adev,
 				mtype_local = MTYPE_CC;
 
 			*flags = AMDGPU_PTE_MTYPE_VG10(*flags, mtype_local);
-		} else if (adev->rev_id) {
+		} else {
 			/* MTYPE_UC case */
 			*flags = AMDGPU_PTE_MTYPE_VG10(*flags, MTYPE_CC);
 		}
@@ -2411,13 +2408,6 @@ static int gmc_v9_0_hw_init(struct amdgpu_ip_block *ip_block)
 	adev->gmc.flush_tlb_needs_extra_type_2 =
 		amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 4, 0) &&
 		adev->gmc.xgmi.num_physical_nodes;
-	/*
-	 * TODO: This workaround is badly documented and had a buggy
-	 * implementation. We should probably verify what we do here.
-	 */
-	adev->gmc.flush_tlb_needs_extra_type_0 =
-		amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 4, 3) &&
-		adev->rev_id == 0;
 
 	/* The sequence of these two function calls matters.*/
 	gmc_v9_0_init_golden_registers(adev);

drivers/gpu/drm/amd/amdkfd/kfd_device.c

@@ -352,11 +352,6 @@ struct kfd_dev *kgd2kfd_probe(struct amdgpu_device *adev, bool vf)
 			f2g = &aldebaran_kfd2kgd;
 			break;
 		case IP_VERSION(9, 4, 3):
-			gfx_target_version = adev->rev_id >= 1 ? 90402
-					   : adev->flags & AMD_IS_APU ? 90400
-					   : 90401;
-			f2g = &gc_9_4_3_kfd2kgd;
-			break;
 		case IP_VERSION(9, 4, 4):
 			gfx_target_version = 90402;
 			f2g = &gc_9_4_3_kfd2kgd;

drivers/gpu/drm/amd/amdkfd/kfd_queue.c

@@ -402,7 +402,7 @@ static u32 kfd_get_vgpr_size_per_cu(u32 gfxv)
 {
 	u32 vgpr_size = 0x40000;
 
-	if ((gfxv / 100 * 100) == 90400 ||	/* GFX_VERSION_AQUA_VANJARAM */
+	if (gfxv == 90402 ||			/* GFX_VERSION_AQUA_VANJARAM */
 	    gfxv == 90010 ||			/* GFX_VERSION_ALDEBARAN */
 	    gfxv == 90008 ||			/* GFX_VERSION_ARCTURUS */
 	    gfxv == 90500)
@@ -462,7 +462,7 @@ void kfd_queue_ctx_save_restore_size(struct kfd_topology_device *dev)
 
 	if (gfxv == 80002)	/* GFX_VERSION_TONGA */
 		props->eop_buffer_size = 0x8000;
-	else if ((gfxv / 100 * 100) == 90400)	/* GFX_VERSION_AQUA_VANJARAM */
+	else if (gfxv == 90402)	/* GFX_VERSION_AQUA_VANJARAM */
 		props->eop_buffer_size = 4096;
 	else if (gfxv >= 80000)
 		props->eop_buffer_size = 4096;

drivers/gpu/drm/amd/amdkfd/kfd_svm.c

@@ -1245,8 +1245,7 @@ svm_range_get_pte_flags(struct kfd_node *node,
 	case IP_VERSION(9, 4, 4):
 	case IP_VERSION(9, 5, 0):
 		if (ext_coherent)
-			mtype_local = (gc_ip_version < IP_VERSION(9, 5, 0) && !node->adev->rev_id) ?
-					AMDGPU_VM_MTYPE_UC : AMDGPU_VM_MTYPE_CC;
+			mtype_local = AMDGPU_VM_MTYPE_CC;
 		else
 			mtype_local = amdgpu_mtype_local == 1 ? AMDGPU_VM_MTYPE_NC :
 				amdgpu_mtype_local == 2 ? AMDGPU_VM_MTYPE_CC : AMDGPU_VM_MTYPE_RW;